Scroll to drive the drill. Five strata, one platform — from the pixels at the surface down to the bedrock it all stands on. The vein marks the seam everything depends on.
Everything the user touches renders here: design tokens, optimistic state, and a 60fps interaction budget. Nothing below this band is visible, but every band below shapes how it feels.
react 19 · edge-rendered · p75 INP 84ms
02 / API
Contract stratum
A thin, typed boundary where every request is validated, shaped, and signed. Breaking changes surface here as schema drift long before they reach a client.
graphql + rest · 214 endpoints · p99 121ms
03 / Engine
Compute band
Schedulers, queues, and the rules engine burn through about two million jobs a day. Backpressure is absorbed inside this band, so spikes never reach the surface.
12 workers · 2.1M jobs/day · retry ×3
04 / Storage
Sedimented state
Every event since day zero is compacted into columnar layers — cheap to scan, impossible to lose. The accent vein marks the write-ahead log, the one seam everything above depends on.
wal + columnar · 41TB · rpo 0s
05 / Bedrock
Bedrock / infra
Machines, networks, and the failure domains everything above stands on. It moves rarely, and when it does, the whole column feels it.
3 regions · 9 AZs · chaos-tested weekly
field notes
Every layer, logged
The cross-section above is generated once per resize into an offscreen atlas — value-noise grain, quantized to three grays, one accent vein. Use the band labels on the left edge to jump straight to a stratum.